Drawing frame



June 29 1926; I H. TUNSTALL DRAWING FRAME Fired Nov. 14 s sheets-sheet 1 June 29 1926. f 1,590,710

H. TUNSTALL DRAWING FRAME Filed NOV. 14 1923 3 Sheets-Sheet 2 i TUR:

June 29 1926.

H. TUNSTALL DRAWING FRAME Filed Nov. 14, 1923 Us'. sheets-sheet s Patented June 29, 1926.

Uhll'fE STATES i,5"90,71'tA aries..

HARRY TUNSTALL, OF FAIR HAVEN, MASSACHUSETTS, ASSIGNOB TO IVALSATIAN MACHINE WORKS, LIMITED, OF BOSTON, MASSACHUSETTS, A. CORPORATION OIF MASSACHUSETTS.

DRAWING FRAME.

In Letters Patent No. 1,351,076, issued to me, I have shown and described a combing machine in which the comb cylinders are given a regular constant rotation, Vbut I have found by experience that it is very desirable that the speed of rotation of the comb cylinder shall be variable, the more rapid part of its rotation being at a time when its clothing or teeth are passing under the rear detaching roll. When the last row of teeth have passed the detaching roll the s )eed of the cylinder should be slower until the first row of teeth again reach the detaching roll. I have shown and shall describe my improvement in connection with a double comber like that described in my said patent, but it will be evident to anyone skilled in the art that its improved features are equally applicable to a single comber or to other machines where such changes of speed are desirable. L v

My invention will be understood by reference to the drawings in which it is Vshown in its preferred form.

Figure 1 an elevation of one of the supporting frames of a machine embodying my invention in its preferred form, c0rrespondino` to Fig. 5 of my said patent.

Fig. 2 is a side elevation of a portion of such a machine including the frame, shown in Fig. 1 and certain of the frames shown in Figs. 2 and 2a of my said patent, the intermediate portions comprising the nipper frames, etc. being` broken away.

Fig. 3 is a plan view similar to Fig. 2, and

Fig. a is a detail to be described below.V

A, A1 are vertical members of the frame. The power shaft 1 is mounted as in said patentand carries a pinion 3 which engages the gear 31 on the shaft 8. On the shaft 8 is also a smaller gear 7 in mesh with a gear 2 on stud 21, which gear 2` is in mesh with a gear 6 which in turn is in mesh with a. gear 61. Gears 6 Vand 61 are each on jack shafts 6EL and 61a. Each of these jack shafts 6u and 61a carries an elliptical gear 62 and 62 and each of these elliptical gears is in mesh with a similar elliptical gear 64 and 6%21 on the shafts 63, 63a, respectively, corresponding to the shafts 63 of my said patent. These two pairs of elliptical gears 62 and 64 and 62xL and 64 are arranged in opposite relation to each other on their respective shafts so that the gears of each pair are always in'mesh. The elliptical gear 62a is the driving gear'of thesystem.

rlhe gears referred to as elliptical gears are in fact elliptical, each having a long and short axis varying the fraction of an inch in length so that their diiference cannot be distinguished in the drawing.V Theyv are also setveccentrically on their shafts. This description also applies to elliptical gears 31 and 631a referred to below.

As in my said patent, the comb cylinders are mounted-on these shafts 63, 63at and by the `use of elliptical gears arranged as shown power applied to the gear 6 from shaft 1 will turn the shafts 63, 63E and the comb cylinders will be given rotation atvariable speeds, one of. the combs being given'its rapid rotationv while the other is moving more slowly. YIt will also be seen from my said patent thatl in the machines operation while the nipper frames onone side of the machine are active, that is, are carrying the fleece to the detaching rolls, at the same moment the nipper frames on the other side of the machine vwill have dropped the fleece (see Fig. 3 of said patent). It is while the nippers are `active that rapid movement should be given to the cylinder combs in this machine; l'

Itis also necessary, however, in machines of this class that the draw box and cans, which `are to kreceive theY comber fleece or sliver, should be moved in .a regular, notV variable manner. In machines embodying .the invention of mv said patent, the draw box and cans are located in front of the end of the machine (see Fig. 1 of said patent where the shafts 63 are shown in section. indicating that the shafts 63 are extended for this purpose). To translate the variable movement given to the shafts 63, 63a so as to give a regular movement to the draw box and cans, I provide on the farther end of the driving shaft 63a of the elliptical gear system described, an elliptical gear 631 which is set with its long diameter at 180 degrees to the long diameter of the gear 641*l at the other end of the shaft. 641`is a sleeve mounted in the support A. about the shaft 63 and movable independently thereof. This sleeve carries a second elliptical gear 631 together with a bevel gear 65 in mesh with the bevel gear 66 on the draw box operating shaft 67. The draw boxes are mounted on brackets A2, A2 carried by the frame A1 andV ere not. shown as they may he of any `Well known construction. "Ihefy C21-rry gears which inesh With the gears 69 0n shaft; .This shaf-ta'lso ceri-ies gears 68 which mesh with. the usual can) driving mechanism.

It will he seen that the gear 6 which is rotated at a constant speed gives a variable speed through elliptio'zthgezir's 625 andi"6415I to the shaft 6.5.@ and.. thmughfthe gear 6.1 t0. the elliptel gl and. 6H; `ztnd the sligtft 6:3; .This im Siiescfs tfrnletedt@ een@ @were ee-'peu 1"Ls.`h@"`.1.ptifil ..631 'Oh Slee s 'merli s' sw" a @smentsired and.' mi tetes beved rs tferid thejshgft T'ndtsrgears' and B19- A Y ilirritei may utihzaefl in other 111echines Where vitv is desireil. to Secure @verk @ble lfr oin :ihconstint'speed andfto translate seid verifiable" speed into ef constant speed ir-gain', andx it is evident Y in its detils the @estrarre .showt my be. 'wie velln@ departing from4 theinventive idee, above de- Sriiber; n is L@V130 'evident niet additional 'resultsrmiy be Eooinpli'slied ohiligin'g there-lativle sijzes ofthe. various gears or by increasing theinruiiherthereof. v` Itis also 'evident' that the sleeve Gill being independent of the shaft '635, that being formed rot-ite 'maybe solid entre;

'fl have shoyvnthe mounting for the elliptical gezir 631 :is @sleeve @4161i Ashaft 63,'but this is' iiierely 'al eonvenieiit; wWely off supporting the"ge`zui 631intheffraiiefAin such nizi'niier' that it`vvill" rotetteindependently of the Shaft Gegend 1in aging the"'w0rdi`s1eevein nily claims I do not mean to linilit myself toahollovvsh-aft"1nou1ited"ito turn onjlshhft 63, 'b1-itVA to nl'de' any slitable "ineens for supporting 'the geel' 631 'so tliet it-"rny'b freely turned by the shaft 63?* to give proper ,construit speed to the drawing freine mechai nisin. f

ltwill. Abe note-dthat in the drawing the ,elliptical gea-rs are all shown' as mounted sirable, 'being ka refinement of vmounting ivhihuseeins'to beiendered necessary beejuse 'of the material 0n which a ooinbing .elaini as invention is VIn e coinbing nixehine.' eeonibing ,eyl-

@freeler lering elliptic-a1 e @ich end, a power :ilse having 'elliptiezil geari'n niesh v vith one of seid' first-named elliptitl gears whereby power sv'ap'plied togyr'otext'e coinbing Cylinder und a. fourth ellip'ti el r fr in in'e'sh with the'other ellipger"fori`l Vseideoinbirig'f Cylinder shaft, seid lest-neniedj elflptiozil gear' Vcarryinga bevel ande drtwiib'o'x shaft also' (Jerryg ,a bevluger.

V'2.'In at combina machine, two parallel Coiifibiiig Cylinders, eheh. having! a driving ke'lli'ptielJ r'gear at one end, saidgears being @ABRMUNSTALQ 

